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Finding the Fourth Proportional to 72,998.44, 109,509.50 and 28,601.12

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Solution

The fourth proportional to 72,998.44, 109,509.50 and 28,601.12 is: 42,906.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,998.44 : 109,509.50 = 28,601.12 : x
  2. Step 2: Convert to fraction form
    72,998.44/109,509.50 = 28,601.12/x
  3. Step 3: Cross multiply
    72,998.44x = 109,509.50 × 28,601.12
  4. Step 4: Simplify right side
    72,998.44x = 3,132,094,695.92
  5. Step 5: Solve for x
    x = 3,132,094,695.92/72,998.44
  6. Step 6: Final answer
    x = 42,906.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.